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Shielding - is it needed?

General discussions or ideas about hardware.
PeteW
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Joined: 25 Jul 2018 20:09

Shielding - is it needed?

Post by PeteW »

I will shortly be re assembling my 520 STFM, and am wondering if the metal shielding is really needed?

I was going to leave it off like I have on my Amiga and just store it in the loft in case I ever feel the need to put it back. It just seems pointless going to the trouble of modifying the shielding to fit around the 4mb memory upgrade if an easier solution is to not fit it at all?!
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rubber_jonnie
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Re: Shielding - is it needed?

Post by rubber_jonnie »

Personally most of mine run without the top shielding, but you do need the bottom shielding for the best fit of the mainboard, so I always keep that.
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800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
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exxos
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Re: Shielding - is it needed?

Post by exxos »

No harm in leaving it off. Mines not had it for the past 20 years along with a case :lol:
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Cosmic Puppet
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Re: Shielding - is it needed?

Post by Cosmic Puppet »

Can the shielding guard against an Electro Magnetic Pulse weapon. Was wondering whilst watching an episode of ElectroBoom?
US Atari 520 STFM (C070523-001 REV.D1) , Exxos PSU, 4MB Marpet Upgrade, Exxos 6 Chip TOS 1.04 USA, EmuTOS 1.0.1, Ultrasatan, PP Driver, Original Floppy Disk Drive, NEC Multisync EA193Mi Monitor, Star LC-10c Printer, iMP C100110-001 DMA.

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sporniket
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Re: Shielding - is it needed?

Post by sporniket »

I believe that the shielding was more necessary when all our equipment were analogic, and thus sensitive to the radiofrequencies generated by surrounding equipment ?
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stephen_usher
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Re: Shielding - is it needed?

Post by stephen_usher »

Given how much RF the MMU seems to spew out, I'm guessing that the shielding is to protect other equipment from the ST.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
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terriblefire
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Re: Shielding - is it needed?

Post by terriblefire »

Pretty sure the shielding was victorian engineering to prevent interference with other devices. Rather than the device itself needing shielding.

It was much more important when we used RF modulators.
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Icky
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Re: Shielding - is it needed?

Post by Icky »

Just wear a tinfoil hat and all will be fine :lol:
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Cosmic Puppet
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Re: Shielding - is it needed?

Post by Cosmic Puppet »

Icky wrote: 02 Nov 2020 22:24 Just wear a tinfoil hat and all will be fine :lol:
Okay.
20201102_223735.jpg
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US Atari 520 STFM (C070523-001 REV.D1) , Exxos PSU, 4MB Marpet Upgrade, Exxos 6 Chip TOS 1.04 USA, EmuTOS 1.0.1, Ultrasatan, PP Driver, Original Floppy Disk Drive, NEC Multisync EA193Mi Monitor, Star LC-10c Printer, iMP C100110-001 DMA.

https://thecosmicpuppets.bandcamp.com/releases My released music so far...
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1040STfit
Posts: 4
Joined: 22 Nov 2020 19:12

Re: Shielding - is it needed?

Post by 1040STfit »

Ha.

Just came here to ask this same question.

Ditching it all. Well, saving it but not reinstalling.
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